✨Don’t just browse - start exploring!✨
Found a listing you love?
Submit a “Book a Tour” inquiry!
Our team will arrange a private tour for any apartment or building in New York City.
Perfectly tailored to your schedule.
771 Union Street is a historic four-story cooperative in Park Slope, Brooklyn. The building offers convenient amenities and is close to popular attractions and dining.
771 Union Street is a four-story, four-unit cooperative dating back to 1920 and located in Park Slope near Prospect Park, Grand Army Plaza, the Brooklyn Museum, the Brooklyn Library, Brooklyn Botanic Gardens, and 5th Avenue dining and shopping. The building offers a central laundry room and basement storage space.
View school info, local attractions, transportation options & more.
Experience amazing 3D aerial maps and fly throughs.
For some co-ops, instead of price per square foot, we use an estimate of the number of rooms for each sold apartment to chart price changes over time. This is because many co-op listings do not include square footage information, and this makes it challenging to calculate accurate square-foot averages.
By displaying the price per estimated room count, we are able to provide a more reliable and consistent metric for comparing sales in the building. While we hope that this gives you a clearer sense of price trends in the building, all data should be independently verified. All data provided are only estimates and should not be used to make any purchase or sale decision.
6sqft delivers the latest on real estate, architecture, and design, straight from New York City.
Like us on Facebook to keep up with the trends and 